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Ceramic Piston for Hydraulic Brakes: Design Study

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Abstract:

A design study for ceramic pistons was undertaken in order to address the overheating problems associated with the caliper during aggressive braking using modern C/C-SiC brake discs. The reasoning behind the piston design and the choice of the shaping technology are explained. Zirconia-toughened mullite (ZTM) ceramic was chosen for the pistons, because this material exhibits a low thermal conductivity, sufficiently high mechanical strength and fracture toughness, as well as very good thermal-shock resistance. The manufacturing technology of experimental ceramic brake pistons involved compounding of the selected starting powders to form a high-solids-loadingcontaining feedstock, tooling, shaping of green parts by low-pressure injection molding, extraction of the organic binder, pressure-less sintering in air and final machining. Prototypes brake pistons were fabricated and successfully tested as components of motorcycle brake systems in a test laboratory and on a motorcycle racing track.

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Periodical:

Advances in Science and Technology (Volume 45)

Pages:

1771-1775

DOI:

https://doi.org/10.4028/www.scientific.net/AST.45.1771

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Online since:

October 2006

Authors:

Tomaž Kosmač, Aleš Dakskobler, Mihael Kermc, Zmago Stadler

Keywords:

Brake Piston, Design Study, Manufacturing, Zirconia-Toughened Mullite

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© 2006 Trans Tech Publications Ltd. All Rights Reserved

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